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Finding the Fourth Proportional to 77,671.10, 107,185.10 and 43,679.58

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Solution

The fourth proportional to 77,671.10, 107,185.10 and 43,679.58 is: 60,277.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,671.10 : 107,185.10 = 43,679.58 : x
  2. Step 2: Convert to fraction form
    77,671.10/107,185.10 = 43,679.58/x
  3. Step 3: Cross multiply
    77,671.10x = 107,185.10 × 43,679.58
  4. Step 4: Simplify right side
    77,671.10x = 4,681,800,259.46
  5. Step 5: Solve for x
    x = 4,681,800,259.46/77,671.10
  6. Step 6: Final answer
    x = 60,277.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.